Comment by epolanski

I lived in downtown Rome, Italy. By far the biggest pollution you get in your house, it's...dust from brakes. It's a tragedy.

Not saying diesel ain't bad, but even now that diesels have been largely banned or reduced to euro 6, it has changed nothing about brake dust.

My flat would fill with it in a single day. It's everywhere. And I lived on a third floor, not even at street level.